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Is NSL.SH open source?

Yes. NSL.SH is fully open source and available on GitHub.

What NSL.SH does​

NSL.SH is the tunneling and domain routing layer that makes your PCS reachable from anywhere:

  1. Domain routing — maps appname-you.nsl.sh to your PCS
  2. WireGuard tunnel — encrypted relay for machines behind CGNAT or without a public IP
  3. Automatic HTTPS — TLS certificates via Caddy reverse proxy

Can I self-host the relay?​

The code is open source, so technically yes. However, the managed NSL.SH service handles all the infrastructure (relay servers, domain management, certificate provisioning) so you don't have to.

See also​